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1. (WO1995010226) LOCATING AND ABLATING PATHWAYS IN THE HEART
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1995/010226 International Application No.: PCT/US1994/011495
Publication Date: 20.04.1995 International Filing Date: 12.10.1994
Chapter 2 Demand Filed: 07.04.1995
IPC:
A61B 5/042 (2006.01) ,A61B 18/14 (2006.01) ,A61N 1/05 (2006.01) ,A61N 1/06 (2006.01) ,A61N 1/40 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
04
Measuring bioelectric signals of the body or parts thereof
0402
Electrocardiography, i.e. ECG
0408
Electrodes specially adapted therefor
042
for introducing into the body
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
14
Probes or electrodes therefor
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1
Electrotherapy; Circuits therefor
02
Details
04
Electrodes
05
for implantation or insertion into the body, e.g. heart electrode
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1
Electrotherapy; Circuits therefor
02
Details
04
Electrodes
06
for high-frequency therapy
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1
Electrotherapy; Circuits therefor
40
Applying electric fields by inductive or capacitive coupling
Applicants:
EP TECHNOLOGIES, INC. [US/US]; 350 Potrero Avenue Sunnyvale, CA 84086, US
Inventors:
McGEE, David, L.; US
HOUSER, Russell, A.; US
SWANSON, David, K.; US
Agent:
HOHENFELDT, Ralph, G. ; 633 West Wisconsin Avenue Milwaukee, WI 53203, US
Priority Data:
08/138,45214.10.1993US
Title (EN) LOCATING AND ABLATING PATHWAYS IN THE HEART
(FR) LOCALISATION ET ABLATION DE VOIES ACCESSOIRES DANS LE COEUR
Abstract:
(EN) Systems and methods sense electrical events about a selected annulus region (26, 30) of the heart (10) to identify the location of an accessory pathway. They establish a contact site between heart tissue and a multi-electrode array (E1-E10) conforming to the circumferential geometry of the selected annulus region (26, 30). The system and methods maintain this site, while conveying signals representing electrical events sensed by bipolar pairs of the electrodes (E1-E10). The systems and methods display the signals as graphic information that represents the time differences (T1, T2) between the atrium (A) and ventricular (V) electrogram complexes sensed by the pairs (E1-E10) on the selected annulus region (26, 30). The pairs (E1-E10) displaying the least time separation between the complexes (A, V) identifies the region of the accessory pathway. With this information, energy is conveyed to the electrodes of the selected pair to ablate tissue.
(FR) L'invention concerne des systèmes et des procédés de détection d'événements électriques autour d'une zone annulaire sélectionnée (26, 30) du coeur (10) permettant d'identifier l'emplacement d'une voie accessoire. Ils établissent un site de contact entre le tissu cardiaque et un ensemble d'électrodes (E1-E10) s'adaptant à la géométrie circonférentielle de la zone annulaire sélectionnée (26, 30). Le système et ces procédés maintiennent ce site tout en transmettant les signaux représentant les événements électriques détectés par les paires d'électrodes bipolaires (E1-E10). Ces systèmes et ces procédés visualisent les signaux sous forme d'informations graphiques représentant les différences de temps (T1-T2) entre les électrogrammes auriculaires (A) et ventriculaires (V) détectés par les paires (E1-E10) sur la zone annulaire sélectionnée (26, 30). Les paires (E1-E10) affichant la plus faible différence de temps entre les électrogrammes (A) et (V) identifient la zone de la voie accessoire. En se fondant sur cette information, l'énergie est transmise aux électrodes de la paire sélectionnée en vue de l'ablation du tissu.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)